Users Guide

3. Specify the SCP file location in vendor-option 43 field of DHCP server.
4. The iDRAC while acquiring IP address advertises vendor class identifier. (Option 60)
5. The DHCP server matches the vendor class to the vendor option in the dhcpd.conf file and sends the SCP file location and, if
specified the SCP file name to the iDRAC.
6. The iDRAC processes the SCP file and configures all the attributes listed in the file.
DHCP options
DHCPv4 allows many globally defined parameters to be passed to the DHCP clients. Each parameter is known as a DHCP option. Each
option is identified with an option tag, which is a 1-byte value. Option tags 0 and 255 are reserved for padding and end of options,
respectively. All other values are available for defining options.
The DHCP Option 43 is used to send information from the DHCP server to the DHCP client. The option is defined as a text string. This
text string is set to contain the values of the SCP filename, share location and the credentials to access the location. For example,
option myname code 43 = text;
subnet 192.168.0.0 netmask 255.255.255.0 {
# default gateway
option routers 192.168.0.1;
option subnet-mask 255.255.255.0;
option nis-domain "domain.org";
option domain-name "domain.org";
option domain-name-servers 192.168.1.1;
option time-offset -18000; #Eastern Standard Time
option vendor-class-identifier "iDRAC";
set vendor-string = option vendor-class-identifier;
option myname "-f system_config.xml -i 192.168.0.130 -u
user -p password -n cifs -s 2 -d
0 -t 500";
where, -i is the location of the Remote File Share and –f is the file name in the string along with the credentials to the Remote File Share.
The DHCP Option 60 identifies and associates a DHCP client with a particular vendor. Any DHCP server configured to take action based
on a client’s vendor ID should have Option 60 and Option 43 configured. With Dell PowerEdge servers, the iDRAC identifies itself with
vendor ID:
iDRAC. Therefore, you must add a new ‘Vendor Class’ and create a ‘scope option’ under it for ‘code 60,’ and then enable the
new scope option for the DHCP server.
Configuring option 43 on Windows
To configure option 43 on Windows:
1. On the DHCP server, go to Start > Administration Tools > DHCP to open the DHCP server administration tool.
2. Find the server and expand all items under it.
3. Right-click on Scope Options and select Configure Options.
The Scope Options dialog box is displayed.
4. Scroll down and select 043 Vendor Specific Info.
5. In the Data Entry field, click anywhere in the area under ASCII and enter the IP address of the server that has the share location,
which contains the SCP file.
The value appears as you type it under the ASCII, but it also appears in binary to the left.
6. Click OK to save the configuration.
Configuring option 60 on Windows
To configure option 60 on Windows:
1. On the DHCP server, go to Start > Administration Tools > DHCP to open the DHCP server administration tool.
2. Find the server and expand the items under it.
3. Right-click on IPv4 and choose Define Vendor Classes.
4. Click Add.
A dialog box with the following fields is displayed:
• Display name:
• Description:
• ID: Binary: ASCII:
5. In the Display name: field, type iDRAC.
6. In the Description: field, type Vendor Class.
Setting up managed system
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